Characterization of digital signal processing in the DiDAC data acquisition system

Parson, J D; Olivier, T L; Habbersett, R C; Martin, J C; Wilder, M E; Jett, J H

Title: Characterization of digital signal processing in the DiDAC data acquisition system

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Abstract

A new generation data acquisition system for flow cytometers has been constructed. This Digital Data Acquisition and Control (DiDAC) system is based on the VME architecture and uses both the standard VME bus and a private bus for system communication and data transfer. At the front end of the system is a free running 20 MHz ADC. The output of a detector preamp provides the signal for digitization. The digitized waveform is passed to a custom built digital signal processing circuit that extracts the height, width, and integral of the waveform. Calculation of these parameters is started (and stopped) when the waveform exceeds (and falls below) a preset threshold value. The free running ADC is specified to have 10 bit accuracy at 25 MHZ. The authors have characterized it to the results obtained with conventional analog signal processing followed by digitization. Comparisons are made between the two approaches in terms of measurement CV, linearity and in other aspects.

Authors:

Parson, J D; Olivier, T L; Habbersett, R C; Martin, J C; Wilder, M E; Jett, J H ^[1]

Los Alamos National Lab., NM (United States)

Publication Date:: Fri Jan 01 00:00:00 EST 1993

OSTI Identifier:: 6831565

Report Number(s):: CONF-9303114-
Journal ID: ISSN 0196-4763; CODEN: CYTODQ

Resource Type:: Conference

Journal Name:: Cytometry (Baltimore); (United States)

Additional Journal Information:: Journal Volume: 6; Conference: 16. congress of the International Society for Analytical Cytology, Colorado Springs, CO (United States), 21-26 Mar 1993; Journal ID: ISSN 0196-4763

Country of Publication:: United States

Language:: English

Subject:: 59 BASIC BIOLOGICAL SCIENCES; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; CYTOLOGICAL TECHNIQUES; DATA ACQUISITION SYSTEMS; COMPARATIVE EVALUATIONS; DIGITIZERS; COMPUTERS; ELECTRONIC CIRCUITS; EVALUATION; PULSE CIRCUITS; SIGNAL CONDITIONERS; 550300* - Cytology; 990301 - Information Handling- Data Handling- (1992-)

Citation Formats


                    Parson, J D, Olivier, T L, Habbersett, R C, Martin, J C, Wilder, M E, and Jett, J H. Characterization of digital signal processing in the DiDAC data acquisition system.  United States: N. p., 1993. 
        Web.

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                    Parson, J D, Olivier, T L, Habbersett, R C, Martin, J C, Wilder, M E, & Jett, J H. Characterization of digital signal processing in the DiDAC data acquisition system.  United States.

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                    Parson, J D, Olivier, T L, Habbersett, R C, Martin, J C, Wilder, M E, and Jett, J H. 1993.  
        "Characterization of digital signal processing in the DiDAC data acquisition system".  United States.

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@article{osti_6831565,

  title        = {Characterization of digital signal processing in the DiDAC data acquisition system},

  author       = {Parson, J D and Olivier, T L and Habbersett, R C and Martin, J C and Wilder, M E and Jett, J H},

  abstractNote = {A new generation data acquisition system for flow cytometers has been constructed. This Digital Data Acquisition and Control (DiDAC) system is based on the VME architecture and uses both the standard VME bus and a private bus for system communication and data transfer. At the front end of the system is a free running 20 MHz ADC. The output of a detector preamp provides the signal for digitization. The digitized waveform is passed to a custom built digital signal processing circuit that extracts the height, width, and integral of the waveform. Calculation of these parameters is started (and stopped) when the waveform exceeds (and falls below) a preset threshold value. The free running ADC is specified to have 10 bit accuracy at 25 MHZ. The authors have characterized it to the results obtained with conventional analog signal processing followed by digitization. Comparisons are made between the two approaches in terms of measurement CV, linearity and in other aspects.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/6831565},
  journal      = {Cytometry (Baltimore); (United States)},

  issn         = {0196-4763},

  number       = ,

  volume       = 6,

  place        = {United States},

  year         = {Fri Jan 01 00:00:00 EST 1993},

  month        = {Fri Jan 01 00:00:00 EST 1993}

}

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